The calculated distance (air line) between Dioulabougou-Boléko and Duekoué is approximately 178 miles respectively 286 kilometers.
By car or train, the actual journey to Duekoué is certainly longer, as only the direct route (as the crow flies) between Dioulabougou-Boléko and Duekoué has been calculated here.
Air line (approximately)
286 kilometers
154 nautical miles